EP0979675B1 - Procédé et installation de broyage de matières premières - Google Patents

Procédé et installation de broyage de matières premières Download PDF

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Publication number
EP0979675B1
EP0979675B1 EP99112848A EP99112848A EP0979675B1 EP 0979675 B1 EP0979675 B1 EP 0979675B1 EP 99112848 A EP99112848 A EP 99112848A EP 99112848 A EP99112848 A EP 99112848A EP 0979675 B1 EP0979675 B1 EP 0979675B1
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EP
European Patent Office
Prior art keywords
mill
roller mill
filter
fan
plant according
Prior art date
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Expired - Lifetime
Application number
EP99112848A
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German (de)
English (en)
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EP0979675B8 (fr
EP0979675A1 (fr
Inventor
Franz Poeschl
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Loesche GmbH
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Loesche GmbH
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Publication of EP0979675B8 publication Critical patent/EP0979675B8/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Definitions

  • the invention relates to a grinding plant according to the preamble of claim 1, in particular to a plant for the production of cement, and to a process for cement production according to the preamble of claim 13.
  • raw material grinding drying plants are operated in conjunction with a clinker burning process to supply the exhaust gases formed in a cement rotary kiln after heat exchangers to further heat utilization.
  • a known milling system is based on a circuit diagram Fig. 3 out.
  • Exhaust gases 3 from a calcination process are supplied from a furnace fan 5 in an exhaust pipe 6 via a shut-off device 6a of a roller mill 2.
  • the fan is referred to here, which feeds a gas stream to a mill.
  • the kiln / kiln / wall fan directs the kiln gas flow and Heat flow of a roller mill, for example, an air flow roller mill to.
  • a mill fan by which the fan is to be understood, which promotes the gas flow required for the mill, a fan 7 is arranged in the flow direction behind a filter 8 functioning as a dust separator.
  • This fan 7 leads the exhaust gas 3 with fines 34 accumulating in the roller mill 2 via a dust exhaust pipe 9, in which a shut-off device 9a is arranged, to the filter 8.
  • the separated in the filter 8 fines 34 is conveyed via transport systems not shown in silos.
  • a shut-off device 15a In combined operation, in which the grinding plant is driven "on line” with a cement rotary kiln (not shown), a shut-off device 15a remains closed in a bypass line 15. Unutilized heat energy is destroyed in a cooling tower 22, which is usually placed after the furnace fan 5, or in the roller mill 2, for example by water injection.
  • a flap lock 25 may be provided, which acts as an air seal.
  • Coarse material 26 deposited in the roller mill 2 is at least partially admixed with the raw material mixture 33 via a conveyor 24 and returned to the roller mill 2.
  • the grinding plant is after Fig. 3 operated so that the pressure zero point, ie the point of atmospheric pressure, is placed just before the entry of the exhaust gases in the roller mill 2, so that the roller mill 2, an integrated classifier 13 and the filter 8 operate under a relatively high negative pressure and corresponding Sealing devices and stable structures are required, which will be explained below.
  • the grinding plant is after Fig. 3 out of service, and only the cement rotary kiln (not shown) is operated.
  • the filter 8 the dust generated by the mill 2 and the residual dust is separated from the heat exchanger in a combined operation. Therefore one speaks also of "filter plant”.
  • direct operation only the residual dust from the exhaust gas 3 from the heat exchanger (not shown) is deposited.
  • the shut-off device 6a in the exhaust pipe 6 and the shut-off device 9a in the dust-exhaust pipe 9 are then closed, and the exhaust stream 3 from the calcination process is passed to the cooling tower 22 directly via the bypass line 15 into the filter 8, dedusted and then via the downstream mill fan 7 and a chimney (not shown) conveyed into the atmosphere.
  • the fan 7 acts as an exhaust fan for the heat exchanger.
  • FIG Fig. 4 A circuit diagram of another raw material mill drying system, which is also referred to as a "three blower version", is shown in FIG Fig. 4 shown.
  • a first fan which the furnace fan 5 of Fig. 3 corresponds, but not shown, is located It conveys the exhaust gases 3 from the calcination process to a roller mill 2.
  • a third blower 38 is arranged as an exhaust fan, which promotes the remaining exhaust gases 3 in a chimney (not shown) as a filter exhaust gas.
  • the resulting in the cyclone battery 29 and the filter 8 fines 34, 35 is fed via corresponding conveyors 36 a silo (not shown).
  • the grind-drying plant after Fig. 4 can work independently of the gas and heat balance of the composite system.
  • a bypass line 15 excess exhaust gas and heat flows from the furnace and calcination process of the roller mill 2 with separator 13 and the cyclone battery 29 can be bypassed and dedusted together with the exhaust gases from the roller mill 2 in the downstream filter system 8.
  • Fig. 6 is an exemplary pressure curve of the composite circuit variant of the system after Fig. 4 shown.
  • the essential facilities are shown with a corresponding assignment above the pressure curve and with reference numerals of Fig. 4 Mistake.
  • Fig. 6 illustrates that the filter 8 operates in a relatively low vacuum range and therefore must be protected against false air intrusions only with relatively little effort.
  • the roller mill must 2, which is operated with negative pressure by -50 to -80 mbar, be sealed to avoid false air breakthroughs almost "hermetically".
  • a high degree of separation in the cyclone battery 29 also requires a relatively high expenditure of energy, and as a further disadvantage of the known system, the cleavage of the end product into coarser fines 35 from the cyclones and finer product 34 from the filter 9 is to be considered ( Fig. 4 ).
  • the grind-drying plant after Fig. 3 Although has a simpler piping, a lower energy consumption and relatively low investment costs due to a compact system design.
  • the filter 8 is in the negative pressure range of the roller mill 2, which is about -70 to -90 mbar, included and must therefore be interpreted constructively and safety accordingly.
  • Filter housings are of considerable size in large-scale grinding plants. The filter housing must for operating pressures of almost -100 mbar and for a start with cold air for safety reasons up to -140 mbar. It requires considerable constructive and manufacturing measures to achieve the required rigidity and exclude collapse. Even through small cracks in the housing, the downstream mill fan 7 sucks false air into the system, which has a loss on the mill exhaust gas and leads to malfunction.
  • the gas temperature in the dedusting filter 8 can not be kept independent of the mill exhaust gas temperature. This dependency can lead to local dew point undershoots and thus to corrosion phenomena in the filter and pipeline area individually and together with false air infiltration. In addition, during the mill operation, no gases other than those coming from the roller mill 2 can be dedusted.
  • the invention has for its object to provide a grinding plant and a method for grinding raw materials, in particular a plant and a method for cement production, which with a particularly low investment and maintenance costs a variable process management and an extremely efficient grinding process, especially efficient cement production guarantee.
  • the object is passed through a grinding plant, e.g. solved by a plant for producing cement with a roller mill, a cement rotary kiln with a heat exchanger unit, a furnace fan and an exhaust fan behind a filter, in which a mill fan is arranged in front of the roller mill, which overcomes the high resistance of the blade ring of the roller mill and a for a Mahltrockmbizeß required exhaust or air flow through the blade ring of the roller mill suppressed and in cooperation with the exhaust fan an advantageous pressure curve before, within and after the roller mill to the filter allows.
  • the pressure zero point ie the atmospheric pressure
  • the pressure zero point is forced into the roller mill and, in the region of the blade ring and the grinding bowl, in particular in an upper region of the blade ring, up to an upper one, by way of process with the mill fan arranged upstream of the mill and thus upstream Edge of the grinding bowl, operationally safe.
  • a minimum negative pressure on the exhaust fan is adjusted while in the flow direction in front of the blade ring, in particular in the mill base through the mill fan overpressure is generated.
  • the arrangement of a mill fan in front of a roller mill is known per se from coal grinding plants.
  • the mill fan is there, however, the only fan in the coal grinding system.
  • the grinding chamber viewing space and, for example, the following burner lines and coal dust / air mixture burners under pressure.
  • the upstream mill fan used in a composite cement raw material grinding plant with Mahldrocknungsprozeß serves to shift the pressure level so that in cooperation with the exhaust fan in the mill interior, a significantly lower negative pressure to ambient pressure arises.
  • the total capacity of the fans of the mill-drying plant, ie the mill fan and the exhaust fan downstream of the filter unit, is distributed among the fans and is lower because of the lower secondary air fractions achieved.
  • the mill base is under pressure.
  • the filter can at a much lower vacuum than the usual according to the circuit according to Fig. 3 operate.
  • the construction of the filter housing for capturing surface pressure can be substantially simplified.
  • the gas flow through the roller mill is controlled by the upstream mill fan. It is advantageous that the control of a bypass exhaust gas flow due to the lower pressure gradient to the filter is easily possible through the exhaust fan. Because of the reduced pressure level in front of the filter, dedusting devices can also be connected to the line between the roller mill and the filter.
  • the invention can be used advantageously not only in cement raw material grinding plants. It is within the scope of the invention to operate a grinding plant without an upstream process, for example a so-called central grinding plant, with an upstream mill fan to shift the pressure level from the negative pressure in the overpressure area into the grinding chamber of the mill and a Fan after filter, an exhaust fan to generate negative pressure. Seen in the flow direction then the lower grinding chamber is up to the intake of the exhaust fan at a lower vacuum than in conventional grinding plants.
  • an upstream mill fan to shift the pressure level from the negative pressure in the overpressure area into the grinding chamber of the mill and a Fan after filter, an exhaust fan to generate negative pressure. Seen in the flow direction then the lower grinding chamber is up to the intake of the exhaust fan at a lower vacuum than in conventional grinding plants.
  • a grinding plant according to the invention in which an upstream mill fan cooperates with an exhaust fan, can be used for grinding a variety of raw materials such as clinker, blastfurnace slag, coal and all other types of minerals and rocks.
  • filter systems the use of a fan in front of the mill means that an additional fan is used for an exhaust fan.
  • the fan which is arranged behind the filter, works both as a mill fan and as an exhaust fan.
  • MPL Modified Pressure Level
  • Fig. 1 is a circuit diagram of a plant for cement production with a calcination process and Mahltrockêtsprozeß shown.
  • Exhaust gases 3 from a cement rotary kiln 40 are fed via a precalciner 41, a heat exchanger unit 42 and a furnace fan 5 and a cooling tower 22 in an exhaust pipe 6 to a grinding drying process with a roller mill 2 and a filter 8.
  • a filter 8 a hose or electrostatic filter can be used.
  • a mill fan 10 or mill fan is arranged, with which the pressure level in the area of the plant parts roller mill 2 and filter 8 is raised.
  • the total capacity of the grinding plant is distributed to the upstream mill fan 10 and the exhaust fan 7 and is not larger, but lower due to the lower air wastage.
  • the upstream mill fan 10 pushes a required for the grinding drying process exhaust gas flow through the blade ring 11 and thereby avoids that the blade ring 11 acts as a resistor for the exhaust fan 7 and a large negative pressure gradient to the atmosphere in the mill shell and in the subsequent system components, in particular in the filter 8 is constructed.
  • the housing of the filter 8 can be made easier and thus more cost-effective.
  • a regulating and shut-off device 46 for example, a throttle valve, which not only in case of downtime of the roller mill 2 allows bypassing the exhaust gases 3 via a bypass line 15 and dedusting in the filter 8.
  • a gas flow measuring device 20 is arranged, the measured values of which are used to control the mill fan 10.
  • Fig. 1 The facilities and plant components for producing a raw material mixture and feeding and feeding devices for the roller mill 2 are in Fig. 1 not shown. You can analogously to the systems according to Figures 3 and 4 be educated.
  • a dust exhaust pipe 9 leads from the roller mill 2 to the filter 8.
  • the resulting in the filter 8 fines 34 is conveyed via transport means not shown in silos.
  • the dedusted exhaust gas 3 can at least partially be supplied via a return line 16 via the mill fan 10 of the roller mill 2 again.
  • a controllable shut-off device 47 is closed in the return line 16, the dedusted exhaust gases 3 are passed through a chimney into the atmosphere.
  • Fig. 1 shows the possibilities for controlling the shut-off and control device 46 in the exhaust pipe 6, a control and shut-off device 48 in the bypass line 15, the control and shut-off device 47 in the return line 16 and in the dust exhaust pipe.
  • the defined pressure curve, which with an upstream mill fan 10 in cooperation with an exhaust fan 7 in the mill drying plant according to Fig. 1 can be achieved is exemplary in Fig. 2 shown.
  • Fig. 2 illustrates the modified pressure level before, within and after the roller mill 2 and in the filter 8.
  • a negative pressure of about -5 to -7 mbar and in the roller mill 2 a negative pressure in the range -50 to -70 mbar prevails.
  • Particularly disadvantageous is the negative pressure in the electrostatic precipitator in the known system according to Fig. 3 and Fig. 5 , which is around -90 mbar.
  • Fig. 2 illustrates that with the upstream mill fan 10 immediately before the roller mill 2 or in the mill base and in front of the blade ring 11, an overpressure, eg of about 40 mbar, can be adjusted.
  • the pressure zero point is operationally safe in an upper region of the blade ring 11 up to an upper edge of the grinding bowl 12.
  • the MPL method according to the invention (modified pressure level) is thus characterized by a shifted pressure level before, within and after the roller mill 2, which is achieved with the upstream mill fan 10 in cooperation with the exhaust fan 7 and to extraordinary savings of investment and energy costs, Maintenance costs and a particularly efficient comminution of raw materials and in particular to an efficient cement production leads.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Fertilizers (AREA)

Claims (19)

  1. Installation de broyage
    avec un broyeur (2) à rouleaux, en particulier un broyeur à courant d'air, avec un bac de broyage (12), une roue (11) à palettes et un tamis (13), et avec un ventilateur (7) qui est placé après un filtre (8) et place sous une dépression le filtre (8), le broyeur (2) à rouleaux et une conduite gaz-poussières (9) entre le filtre (8) et le broyeur (2) à rouleaux, ainsi qu'avec un ventilateur (10) de broyeur avant le broyeur (2) à rouleaux, qui pousse le flux de gaz nécessaire dans le broyeur (2) à rouleaux,
    caractérisée en ce que
    un niveau de pression prédéterminable peut être instauré avant, dans et après le broyeur (2) à rouleaux par le ventilateur (10) de broyeur et le ventilateur (7) d'échappement, et le point zéro de la pression peut être fixé au niveau de la roue (11) à palettes et du bac de broyage (12).
  2. Installation de fabrication de ciment,
    avec un broyeur (2) à rouleaux dans lequel, en montage mixte avec un four rotatif (40) à ciment et une unité (42) échangeuse de chaleur, une matière première de ciment est soumise à un séchage-broyage avec des gaz d'échappement (3) provenant du four rotatif (40) à ciment, avec un ventilateur (5) de four qui est placé après l'unité (42) échangeuse de chaleur et envoie les gaz d'échappement (3) du four rotatif (40) à ciment à une conduite (6) d'échappement, et avec un ventilateur (7) d'échappement qui est placé après un filtre (8) et charge sous une dépression le filtre (8), le broyeur (2) à rouleaux avec une roue (11) à aubes, un bac de broyage (12) et un tamis (13) ainsi qu'une conduite gaz-poussières (9) entre le filtre (8) et le broyeur (2) à rouleaux,
    caractérisée
    en ce qu' un ventilateur (10) de broyeur est placé avant le broyeur (2) à rouleaux et pousse le flux de gaz nécessaire dans le broyeur (2) à rouleaux, et en ce qu'un niveau de pression prédéterminable peut être instauré avant, dans, et après, le broyeur (2) à rouleaux et le point zéro de la pression peut être fixé au niveau de la roue (11) à palettes et du bac de broyage (12).
  3. Installation de broyage selon la revendication 1 ou installation selon la revendication 2,
    caractérisée en ce que
    le point zéro de la pression ou une dépression minimale peuvent être instaurés dans une zone supérieure de la roue (11) à palettes jusqu'à un bord supérieur du bac de broyage (12).
  4. Installation de broyage selon la revendication 1, 3 ou installation selon l'une quelconque des revendications 2, 3,
    caractérisée
    en ce qu'avec le ventilateur (10) de broyeur placé avant, une surpression peut être instaurée avant, et dans, le broyeur (2) à rouleaux au-dessous de la roue (11) à palettes, et une dépression au-dessus du bac de broyage (12) et au niveau du tamis (13), lequel est intégré au broyeur (2) à rouleaux.
  5. Installation de broyage selon l'une quelconque des revendications 1, 3, 4 ou installation selon l'une quelconque des revendications 2 à 4,
    caractérisée
    en ce qu'une dépression peut être instaurée dans le filtre (8) et le filtre (8) comprend une structure de boîtier relativement légère.
  6. Installation de broyage selon l'une quelconque des revendications 1, 3 à 5 ou installation selon l'une quelconque des revendications 2 à 5,
    caractérisée en ce que
    le broyeur (2) à rouleaux comprend des joints d'étanchéité simplifiés, en particulier au niveau de l'introduction des matières premières et des traversées de pièces mobiles à travers le boîtier de broyeur.
  7. Installation de broyage selon l'une quelconque des revendications 1, 3 à 6 ou installation selon l'une quelconque des revendications 2 à 6,
    caractérisée en ce que
    des dispositifs de dépoussiérage peuvent être raccordés sur la conduite gaz-poussières (9).
  8. Installation selon l'une quelconque des revendications 2 à 7,
    caractérisée
    en ce qu'une conduite de dérivation (15) est prévue pour introduire des gaz d'échappement (3) provenant du four rotatif à ciment (40) et en ce que la conduite de dérivation (15) part de la conduite d'échappement (6) avant un dispositif de régulation et de fermeture (46) dans la direction d'écoulement.
  9. Installation selon l'une quelconque des revendications 2 à 8,
    caractérisée en ce que
    l'écoulement de gaz en direction du filtre (8) peut être conditionné en termes de débit volumique et de température du gaz d'une manière essentiellement indépendante de l'écoulement du gaz à travers le broyeur (2) à rouleaux.
  10. Installation selon l'une quelconque des revendications 2 à 9,
    caractérisée
    en ce qu'après le filtre (8) est placée une conduite de retour (16) pour ramener des écoulements de gaz régulables dans le broyeur (2) à rouleaux.
  11. Installation selon la revendication 10,
    caractérisée en ce que
    des dispositifs de régulation et de fermeture (46, 47, 48) sont placés dans la conduite d'échappement (6) ainsi que dans la conduite de dérivation (15) et dans la conduite de retour (16).
  12. Installation de broyage selon l'une quelconque des revendications 1, 3 à 7 ou installation selon l'une quelconque des revendications 2 à 11,
    caractérisée
    en ce qu'un dispositif (20) de mesure de débit de gaz est placé avant le ventilateur (10) de broyeur sur la conduite d'alimentation menant au broyeur (2) à rouleaux.
  13. Procédé de fabrication de ciment dans un système mixte, dans lequel un mélange de matières premières (33) est soumis à un séchage-broyage dans un broyeur (2) à rouleaux avec introduction de gaz d'échappement (3) provenant d'un processus de calcination, puis est tamisé et envoyé sous forme de mélange poussières-gaz d'échappement à un filtre (8) pour séparer les poussières des gaz d'échappement (3) et les gaz d'échappement (3) sont introduits à l'aide d'un ventilateur (5) de four après la calcination et le préchauffage de la farine crue ainsi qu'avec un ventilateur (7) après un filtre (8) à travers le broyeur (2) à rouleaux et le filtre (8) suivant un montage mixte, en particulier dans une installation selon l'une quelconque des revendications 2 à 12,
    caractérisé
    en ce qu'une quantité régulable de gaz d'échappement est poussée dans le broyeur (2) à rouleaux et à travers sa roue (11) à palettes avec un ventilateur de broyeur (10) placé avant le broyeur (2) à rouleaux, en ce que le point zéro de la pression est fixé au niveau de la roue (11) à palettes et du bac de broyage (12) du broyeur (2) à rouleaux et en ce qu'au-dessus de la roue (11) à palettes, une faible dépression est instaurée jusque dans le filtre (8).
  14. Procédé selon la revendication 13,
    caractérisé
    en ce qu'avant et au-dessous de la roue (11) à palettes du broyeur (2) à rouleaux, une surpression de 40 à 50 mbar par exemple est instaurée par le ventilateur (10) de broyeur placé avant.
  15. Procédé selon la revendication 13 ou 14,
    caractérisé
    en ce qu'au niveau de la roue (11) à palettes et du bac de broyage (12) est instaurée une dépression, en particulier d'environ -3 à -5 mbar, et, au niveau du tamis (13), de la conduite poussières-gaz d'échappement (9), ainsi que dans le filtre (8), est instaurée une dépression de -25 à -45 mbar, par exemple.
  16. Procédé selon l'une quelconque des revendications 13 à 15,
    caractérisé en ce que
    le gaz d'échappement (3) provenant du processus de calcination est envoyé, au moins partiellement, directement au filtre (8) dans une conduite de dérivation (15), et est conditionné en termes de débit volumique et de température du gaz indépendamment du flux de gaz dans le broyeur (2) à rouleaux.
  17. Procédé selon l'une quelconque des revendications 13 à 16,
    caractérisé
    en ce qu'après le filtre (8) et le ventilateur d'installation (7), le gaz d'échappement (3) est réintroduit au moins partiellement dans le broyeur (2).
  18. Procédé selon l'une quelconque des revendications 13 à 17,
    caractérisé en ce que,
    du fait du ventilateur de broyeur (10) placé avant, le niveau de pression est augmenté dans le broyeur (2) à rouleaux jusque dans le filtre (8).
  19. Procédé selon l'une quelconque des revendications 13 à 18,
    caractérisé en ce que
    des gaz d'échappement (3) d'autres systèmes de broyage sont introduits dans le filtre (8) et dépoussiérés.
EP99112848A 1998-08-11 1999-07-02 Procédé et installation de broyage de matières premières Expired - Lifetime EP0979675B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19836323 1998-08-11
DE19836323A DE19836323C2 (de) 1998-08-11 1998-08-11 Mahlanlage, Anlage zur Herstellung von Zement und Verfahren zur Vermahlung von Rohmaterialien

Publications (3)

Publication Number Publication Date
EP0979675A1 EP0979675A1 (fr) 2000-02-16
EP0979675B1 true EP0979675B1 (fr) 2010-09-15
EP0979675B8 EP0979675B8 (fr) 2010-12-29

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ID=7877170

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Application Number Title Priority Date Filing Date
EP99112848A Expired - Lifetime EP0979675B8 (fr) 1998-08-11 1999-07-02 Procédé et installation de broyage de matières premières

Country Status (8)

Country Link
US (2) US6276620B1 (fr)
EP (1) EP0979675B8 (fr)
JP (1) JP3933820B2 (fr)
AT (1) ATE481175T1 (fr)
CA (1) CA2279086C (fr)
DE (1) DE19836323C2 (fr)
DK (1) DK0979675T3 (fr)
ES (1) ES2351083T3 (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836323C2 (de) * 1998-08-11 2000-11-23 Loesche Gmbh Mahlanlage, Anlage zur Herstellung von Zement und Verfahren zur Vermahlung von Rohmaterialien
DE10050332C2 (de) * 2000-10-11 2003-11-27 Loesche Gmbh Verfahren und Vorrichtung zur Präparierung von Brennstoffen
DE10152991A1 (de) * 2001-10-26 2003-05-08 Wolff Walsrode Ag Verfahren und Vorrichtung zur Mahltrocknung
DE10343218B4 (de) * 2003-09-12 2006-05-04 Loesche Gmbh Sicherheitssystem für eine Wälzmühle und Verfahren zur Herstellung von Zement
EP1675683B1 (fr) * 2003-09-12 2011-03-02 Loesche GmbH Procédé d'utilisation d'un broyeur à cylindres, et procédé de production de ciment
DE102004003068A1 (de) * 2004-01-21 2005-08-11 Khd Humboldt Wedag Ag Zementklinkerherstellung mit Teilstromabzug schadstoffhaltigen Drehofenabgases
DE102005026425A1 (de) * 2005-06-08 2006-12-14 Polysius Ag Vorrichtung und Verfahren zum Trocknen und Desagglomerieren
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DE19836323A1 (de) 2000-02-24
DE19836323C2 (de) 2000-11-23
US20020023976A1 (en) 2002-02-28
CA2279086C (fr) 2006-01-10
EP0979675B8 (fr) 2010-12-29
CA2279086A1 (fr) 2000-02-11
ATE481175T1 (de) 2010-10-15
US6276620B1 (en) 2001-08-21
JP3933820B2 (ja) 2007-06-20
DK0979675T3 (da) 2011-01-10
ES2351083T3 (es) 2011-01-31
US6685117B2 (en) 2004-02-03
EP0979675A1 (fr) 2000-02-16
JP2000079352A (ja) 2000-03-21

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